Answer:
Producer: submerged aquatic plants; decomposer: bacteria; and consumer: small water fleas
Explanation:
The organisms that are able to produce organic food by using simple substances are called autotrophs or producers. In the given ecosystem, the aquatic plants are producers as they are able to produce organic nutrients (glucose) by the process of photosynthesis.
Decomposers are the organisms that derive their nutrition from dead animal and plant bodies. The bacteria present in the pond feed on dead water fleas and therefore, are the decomposers.
Consumers are the organisms that feed on plants and/or animals or their products. The small water fleas in the pond ecosystem are unable to make organic nutrients and derive the same from the aquatic plants. So, water fleas are consumers.
The answer is: “Whales are more efficient at gas exchange than humans which helps them conserve energy.”
Answer:
First, second, and last are correct statements.
For accuracy and reliability of any experiment, a number of observations must be as large as possible. It reduces the effect of any observation or any event which might have happened by chance or error.
Thus, finches were better to record observations as they were available in large number as compared to the tortoise.
In addition, the life cycle of birds is smaller as compared to the tortoise which enabled the scientists to observe more generations.
Lastly, the birds were easy to capture and track as compared to the tortoise. Tortoise being an amphibian could live on land as well as in water which made it difficult to track them.
It’s the last one.
All of these are parts of the cell theory.